/**************************************************************************************************
*******
**************************************************************************************************/

/**************************************************************************************************
    Filename:       simpleGATTprofile_ota.c
    Revised:
    Revision:

    Description:    This file contains the Simple GATT profile sample GATT service
                  profile for use with the BLE sample application.


**************************************************************************************************/

/*********************************************************************
    INCLUDES
*/
#include "bcomdef.h"
#include "OSAL.h"
#include "linkdb.h"
#include "att.h"
#include "gatt.h"
#include "gatt_uuid.h"
#include "gattservapp.h"
#include "gapbondmgr.h"

#include "simpleProfile.h"

/*********************************************************************
    MACROS
*/

/*********************************************************************
    CONSTANTS
*/

#define SERVAPP_NUM_ATTR_SUPPORTED        21

/*********************************************************************
    TYPEDEFS
*/

/*********************************************************************
    GLOBAL VARIABLES
*/

// Simple GATT Profile Service UUID: 0xFD50
CONST uint8 simpleProfileServUUID[ATT_BT_UUID_SIZE] =
{
    LO_UINT16(SIMPLEPROFILE_SERVICE_UUID), HI_UINT16(SIMPLEPROFILE_SERVICE_UUID)
};

// Characteristic 1 UUID: 0xFD52
CONST uint8 simpleProfile_data_in_UUID[ATT_BT_UUID_SIZE] =
{
    LO_UINT16(SIMPLEPROFILE_DATA_IN_UUID), HI_UINT16(SIMPLEPROFILE_DATA_IN_UUID)
};

// Characteristic 2 UUID: 0xFD54
CONST uint8 simpleProfile_data_out_UUID[ATT_BT_UUID_SIZE] =
{
    LO_UINT16(SIMPLEPROFILE_DATA_OUT_UUID), HI_UINT16(SIMPLEPROFILE_DATA_OUT_UUID)
};


/*********************************************************************
    EXTERNAL VARIABLES
*/

/*********************************************************************
    EXTERNAL FUNCTIONS
*/

/*********************************************************************
    LOCAL VARIABLES
*/

static simpleProfile_CB* simpleProfile_cb = NULL;


/*********************************************************************
    Profile Attributes - variables
*/

// Simple Profile Service attribute
static CONST gattAttrType_t simpleProfileService = { ATT_BT_UUID_SIZE, simpleProfileServUUID };


// Simple Profile Characteristic 1 Properties
static uint8 simpleProfile_data_in_Props = GATT_PROP_WRITE_NO_RSP;

// Characteristic 1 Value
static uint8 simpleProfile_data_in_val[20];// = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0,};

// Simple Profile Characteristic 2 Properties
static uint8 simpleProfile_data_out_Props = GATT_PROP_NOTIFY;

// Characteristic 2 Value
static uint8 simpleProfile_data_out_val[20];

static gattCharCfg_t simpleProfile_data_out_cccd[GATT_MAX_NUM_CONN];


/*********************************************************************
    Profile Attributes - Table
*/
static gattAttribute_t simpleProfileAttrTbl[7] =
{
    {
        { ATT_BT_UUID_SIZE, primaryServiceUUID }, /* type */
        GATT_PERMIT_READ,                         /* permissions */
        0,                                        /* handle */
        (uint8*)& simpleProfileService               /* pValue */
    },
    {
        { ATT_BT_UUID_SIZE, characterUUID },
        GATT_PERMIT_READ,
        0,
        &simpleProfile_data_in_Props
    },
    {
        { ATT_BT_UUID_SIZE, simpleProfile_data_in_UUID },
        GATT_PERMIT_WRITE,
        0,
        &simpleProfile_data_in_val[0]
    },
    {
        { ATT_BT_UUID_SIZE, characterUUID },
        GATT_PERMIT_READ,
        0,
        &simpleProfile_data_out_Props
    },
    {
        { ATT_BT_UUID_SIZE, simpleProfile_data_out_UUID },
        0,
        0,
        &simpleProfile_data_out_val[0]
    },
    {
        { ATT_BT_UUID_SIZE, clientCharCfgUUID },
        GATT_PERMIT_READ | GATT_PERMIT_WRITE,
        0,
        (uint8*)& simpleProfile_data_out_cccd
    },
};


/*********************************************************************
    LOCAL FUNCTIONS
*/
static uint8 simpleProfile_ReadCB( uint16 connHandle, gattAttribute_t* pAttr,
                                   uint8* pValue, uint16* pLen, uint16 offset, uint8 maxLen );
static bStatus_t simpleProfile_WriteCB( uint16 connHandle, gattAttribute_t* pAttr,
                                        uint8* pValue, uint16 len, uint16 offset );

static void simpleProfile_HandleConnCB( uint16 connHandle, uint8 changeType );


/*********************************************************************
    PROFILE CALLBACKS
*/
// Simple Profile Service Callbacks
CONST gattServiceCBs_t simpleProfileCBs =
{
    simpleProfile_ReadCB,  // Read callback function pointer
    simpleProfile_WriteCB, // Write callback function pointer
    NULL                       // Authorization callback function pointer
};

/*********************************************************************
    PUBLIC FUNCTIONS
*/

/*********************************************************************
    @fn      SimpleProfile_AddService

    @brief   Initializes the Simple Profile service by registering
            GATT attributes with the GATT server.

    @param   services - services to add. This is a bit map and can
                       contain more than one service.

    @return  Success or Failure
*/
bStatus_t SimpleProfile_InitService( simpleProfile_CB* appCallbacks )
{
    uint8 status = SUCCESS;
    // Initialize Client Characteristic Configuration attributes
    GATTServApp_InitCharCfg( INVALID_CONNHANDLE, simpleProfile_data_out_cccd );
    // Register with Link DB to receive link status change callback
    VOID linkDB_Register( simpleProfile_HandleConnCB );
    // Register GATT attribute list and CBs with GATT Server App
    status = GATTServApp_RegisterService( simpleProfileAttrTbl,
                                          GATT_NUM_ATTRS( simpleProfileAttrTbl ),
                                          &simpleProfileCBs );

    if (status != SUCCESS)
        LOG("Add Simple Profile service failed!\n");

    simpleProfile_cb = appCallbacks;
    return ( status );
}

/*********************************************************************
    @fn          simpleProfile_ReadAttrCB

    @brief       Read an attribute.

    @param       connHandle - connection message was received on
    @param       pAttr - pointer to attribute
    @param       pValue - pointer to data to be read
    @param       pLen - length of data to be read
    @param       offset - offset of the first octet to be read
    @param       maxLen - maximum length of data to be read

    @return      Success or Failure
*/
static uint8 simpleProfile_ReadCB( uint16 connHandle, gattAttribute_t* pAttr,
                                   uint8* pValue, uint16* pLen, uint16 offset, uint8 maxLen )
{
    bStatus_t status = SUCCESS;

    // If attribute permissions require authorization to read, return error
    if ( gattPermitAuthorRead( pAttr->permissions ) )
    {
        // Insufficient authorization
        return ( ATT_ERR_INSUFFICIENT_AUTHOR );
    }

    // Make sure it's not a blob operation (no attributes in the profile are long)
    if ( offset > 0 )
    {
        return ( ATT_ERR_ATTR_NOT_LONG );
    }

    if ( pAttr->type.len == ATT_BT_UUID_SIZE )
    {
        // 16-bit UUID
        uint16 uuid = BUILD_UINT16( pAttr->type.uuid[0], pAttr->type.uuid[1]);

        switch ( uuid )
        {
        // No need for "GATT_SERVICE_UUID" or "GATT_CLIENT_CHAR_CFG_UUID" cases;
        // gattserverapp handles those reads
        case SIMPLEPROFILE_DATA_IN_UUID:
            *pLen = 20;
            VOID osal_memcpy( pValue, pAttr->pValue, 20 );
            break;

        case SIMPLEPROFILE_DATA_OUT_UUID:
            //case SIMPLEPROFILE_CHAR4_UUID:
            *pLen = 20;
            VOID osal_memcpy( pValue, pAttr->pValue, *pLen );
            break;

        default:
            // Should never get here! (characteristics 3 and 4 do not have read permissions)
            *pLen = 0;
            status = ATT_ERR_ATTR_NOT_FOUND;
            break;
        }
    }
    else
    {
        // 128-bit UUID
        *pLen = 0;
        status = ATT_ERR_INVALID_HANDLE;
    }

    return ( status );
}

/*********************************************************************
    @fn      simpleProfile_WriteAttrCB

    @brief   Validate attribute data prior to a write operation

    @param   connHandle - connection message was received on
    @param   pAttr - pointer to attribute
    @param   pValue - pointer to data to be written
    @param   len - length of data
    @param   offset - offset of the first octet to be written

    @return  Success or Failure
*/
// TODO: test this function

static bStatus_t simpleProfile_WriteCB( uint16 connHandle, gattAttribute_t* pAttr,
                                        uint8* pValue, uint16 len, uint16 offset )
{
    bStatus_t status = SUCCESS;

    // If attribute permissions require authorization to write, return error
    if ( gattPermitAuthorWrite( pAttr->permissions ) )
    {
        // Insufficient authorization
        return ( ATT_ERR_INSUFFICIENT_AUTHOR );
    }

    if ( pAttr->type.len == ATT_BT_UUID_SIZE )
    {
        // 16-bit UUID
        uint16 uuid = BUILD_UINT16( pAttr->type.uuid[0], pAttr->type.uuid[1]);

        switch ( uuid )
        {
        case SIMPLEPROFILE_DATA_IN_UUID:

            //Validate the value
            // Make sure it's not a blob oper
            if ( offset != 0 )
            {
                status = ATT_ERR_ATTR_NOT_LONG;
            }

            if (SUCCESS == status)
            {
                LOG("private data in\n");

                if (NULL != simpleProfile_cb)
                {
                    simpleProfile_cb->simpleProfile_data_in_cb
                    (
                        connHandle,
                        offset,
                        len,
                        pValue
                    );
                }
            }

            break;

        case GATT_CLIENT_CHAR_CFG_UUID:
            status = GATTServApp_ProcessCCCWriteReq( connHandle, pAttr, pValue, len,
                                                     offset, GATT_CLIENT_CFG_NOTIFY );

            if ( status == SUCCESS )
            {
                uint16 t_cccd_val = BUILD_UINT16( pValue[0], pValue[1] );
                t_cccd_val = (GATT_CLIENT_CFG_NOTIFY == t_cccd_val) ?\
                             TRUE : FALSE;

                if (NULL != simpleProfile_cb)
                {
                    simpleProfile_cb->simpleProfile_data_out_ccd_cb
                    (
                        connHandle,
                        t_cccd_val
                    );
                }
            }

            break;

        default:
            // Should never get here! (characteristics 2 and 4 do not have write permissions)
            status = ATT_ERR_ATTR_NOT_FOUND;
            break;
        }
    }
    else
    {
        // 128-bit UUID
        status = ATT_ERR_INVALID_HANDLE;
    }

    return ( status );
}

/*********************************************************************
    @fn          simpleProfile_HandleConnStatusCB

    @brief       Simple Profile link status change handler function.

    @param       connHandle - connection handle
    @param       changeType - type of change

    @return      none
*/
static void simpleProfile_HandleConnCB( uint16 connHandle, uint8 changeType )
{
    // Make sure this is not loopback connection
    if ( connHandle != LOOPBACK_CONNHANDLE )
    {
        // Reset Client Char Config if connection has dropped
        if ( ( changeType == LINKDB_STATUS_UPDATE_REMOVED )      ||
                ( ( changeType == LINKDB_STATUS_UPDATE_STATEFLAGS ) &&
                  ( !linkDB_Up( connHandle ) ) ) )
        {
            GATTServApp_InitCharCfg( connHandle, simpleProfile_data_out_cccd );
        }
    }
}


/*********************************************************************
*********************************************************************/
